Dual control for aeroplanes



Feb. 16, 1932. w, BARRY 1,845,953

DUAL CONTROL FOR AEROELANES Filed May 31. 1929 VV/l/ld/l/ "Car/r] INVENTOR' Patented Feb. 16, 1932 UNITED STATES WILLIAM W. BARRY, OF PORTLAND, OREGON DUAL OONTROL FOB AERCPLANES Application filed Kay 31,

My invention relates to controls for aeroplanes and is primarily intended for dually operated planes, and moreparticularly where pilot and student are in control within the planes. As a qualified aviator, I have observed that the greatest hazard in flying and particularly flying in instruction work with students resides in the fact that in the early stages of flight instruction, the loss of sense is of control by the student greatly increases the hazards of flight. When air currents and pockets are encountered the fright of the student causes him to loose his sense of safety with the control.

I place in alignment within the cockpit of the aeroplane dual controls one of which is in control at all times of the pilot, the other in control of the student, and so long as the operation is conducted safely by the student, an he is in control of the ship, but when unsafe operation is being carried on by the student, the pilot may disconnect his control mechanisms simultaneously and instantaneously, and assume full control of the ship himself.

LI A further object of my invention is to provide in a dually controlled ship means whereby one of the pilots may control the path of the ship independent of the other and take the control when for any reason, the other pilot should lose control or fail to respond to the requirement of safety in flight.

A further object of my invention resides in placing a dual control within the ship and particularly in air ships being used in mili- 35 tary operations wherein should one of the pilots be killed or injured the remaining pilot could successfully carry on the manipulation and operation of the ship.

lVith these and incidental objects in View,

11 the invention consists in certain novel features of construction and combination of parts, the essential elements of which are set forth in the appended claims, and a preferred form of embodiment of which is hereinafter shown with reference to the drawings which accompany and form a part of this specification;

In the drawings:

Fig. l a perspective end view of a dual control shown in position and. alignment and 50 attached to the various control mechanisms.

1929. Serial I0. 387,838.

Fig. 2 is a side view of one of the heads shown in position and attached to the control mechanism.

Fig. 3 is a side view of the mechanism illustrated in Fig. 1 and illustrating the hood released from the control by the pilot thus rendering inoperative the control in the hands of the student pilot, or injured pilot.

Fig. 4 is a top plan View of the mechanism illustrated in Fig. 3 and illustrating the operating hood in inoperative position.

Fig. 5 is a top plan view of the hinged clamp disposed about the clamping jaws of the control hood.

Fig. 6 is a side view of the control link also in position for being disconnected by the pilot.

I have illustrated my dual control in place and in position in Fig. 1. The student pilot has charge of control stick 1, and the instruction pilot has charge of control stick 2, with a connecting link 3 leading from the hub 4 of the control stick 1 to the hub 5 of the control stick 2. The central casting 6, supporting the rudder control bar 7. The control cables 8 and 9 leading to the respective ailerons, rudders and movable flaps. The purpose of my device is to place a suitable mechanism within the hands of the instruction pilot to disconnect all of the controls in the hands of the student pilot when desired. I accomplish this result by a safety control line 10 having aplurality of lines leading therefrom, as line 11 which passes about a pulley 12 disposed at the base of the hub 13 illustrated in Fig. 2 and having a plurality of encasing hinged socket forming members 14 that are hingedly secured to the hub 13, into which the student control stick 1 is placed. An enclosing locking band 15 passes about the socket forming hinged members 14 and maintains the same fixed and secure as a socket and into which the student control stick 1 is placed. When it is desired on the part of the instruction pilot to disconnect the student control stick from operating conditions, the locking pin 16 is withdrawn from the eyes 17 and 18 of the locking closure 15 and the socket forming elements 14 into which the control stick 1 is 23 is disconnected from the locking hook 25 the student pilot is simultaneously relieved from control of the lines lcadingto the movable flaps, rudder and aileron controls and the control stick. The instruction pilot, or the primary pilot is placed inabsolute control of the various governing controlling factors of the aeroplanes upon the release of the controlling factors from student control. The pull of the safety control line 10 not only disconnects the control stick from the socket of the hub, but simultaneously therewith disconnects all the control lines in the hands of the student pilot.

Claims:

1. An aeroplane control stick comprising a pair of separable parts, a clamp for rigidly securing said parts together as an operating unit, said' clamp including a movable ja-W mounted on one of said parts and adapted to engage the other part, a latch for holding said jaw in its closed position, and means for releasing said latch to disengage said parts.

2. A joy stick for a dual control aeroplane comprising a control member in tWo Wholly separable portions, a. hinged coupling member oining said portions, and securing means for maintaining said coupling member in closed position about said controlling member, and means operable by the pilotinstructor to release said securing means.

3. In aeroplane control mechanism, in combination with dual controls for aeroplanes, a safety control line running from the pilot directly to the student control stick and detachably attachable thereto, release lines securely attached to the main line, release rings disposed at the free ends of the release lines, shanks disposed on oppositely disposed ends of the student rudder control bar, hooks hingedly connected to the shanks at their free ends and adapted for being held in place by the release r1 ngs disposed on the release l1nes.

l. A dual control for aeroplanes, including connected joy sticks and rudder control bars, one of said sticks disposed Within a socket disposed upon ahub of the control rod, the socket being composed of a plurality of socket forming elements hinged relative to the hub, one of said rudder control bars having a shank disposed upon its oppositely disposed ends, each shank having a hook hingforming elements hinged relative to the hub,

one of said rudder control bars having a shank disposed upon its oppositely disposed ends, each of said shanks having a hook hingedly connected toits free end and means for releasing the socket and each of the hinged hooks by means disposed at the controls of the pilot Whereby'the stick disposed Within the socket and the rudder control bar become simultaneously inoperative.

WILLIAM W. BARRY. 

